The DBS-1819N420 from Stellant Systems is a RF Amplifier with Frequency 18.1 to 18.6 GHz, Gain 30 to 35 dB, Gain Flatness ±0.5 dB, Noise Figure 2.3 to 2.5 dB, P1dB 20 dBm. Tags: Hermetic, Low Noise Amplifier. More details for DBS-1819N420 can be seen below.